Spring-hinge



(N0 Model.)

P. CHANDLER SPRING HINGE.

'Patented Apr. 13,1897;

PERLEY CHANDLER, OF BARRE, VERMONT, ASSIGNOR TO JOHN WV.

' OURRIER, OF BOSTON, MASSACHUSETTS.

SPRING-HINGE.

SPECIFICATION forming' part of Letters Patent N0. 580,373, dated April13, 1897. Application filed June Il, 1896` Serial No. 594,239. (Nomodel.)

To all whom it may concern:

Be it known that I, PERLEY CHANDLER, residing in Barre, in the county ofWashington and State of Vermont, have invented an lmprovenient inDoor-Hinges, of which the following description, in connection with theaccompanying drawings, is a speeiiicatiomlike letters on the drawingsrepresenting like parts.

This invention relates to door-hinges of that class employed on doorswhich swing on op posite sides of the center or normal position of thedoor and substantially such as shown and described in United StatesPatent No. 539,724, granted to me May 2l, 1895.

My present invention has for its object to provide a swinging hinge ofsimple and improved construction, which can be operated with a minimumpower, and which is also pref erably constructed so as to avoid cuttingaetion or wear upon the arbor upon which the door swings.

ln accordance with this invention the arbor or pivot for the door issupported to turn in a suitable framework or bracket and the said arborhas fitted loosely on it a sleeve upon which is loosely fitted a secondsleeve, the said sleeves being encircled by a spiral spring having oneend connected to one sleeve and the other end connected to the othersleeve, the said sleeves being adapted to be turned or rotated inopposite directions by the rotation of the door pivot or arbor, as willbe described. These and other features of this invention will be pointedout in the claim at the end of this specilication.

Figure l represents in elevation, with parts broken away, a sufficientportion of a door, its casing, and a hinge embodying this invention.Fig. 2 is a section on the line 2 2,Fig. l; Fig. 3, a vertical sectionof the hinge on the line 3 3, Fig. 2 and Fig. l, avertical section ofthe hinge on the line et 4, Fig. 2.

Referring to Fig. l, A represents a door, and A the casing therefor,which latter is provided with a suitable socket or recess A2 for a hingeembodying this invention.

The hinge comprises, essentially, a vertical pivot or arbor a, havingbearings at its opposite ends in a suitable framework, herein shown asan L-shaped bar or casting a', and

an upright arm or bracketed, secured to the bar or casting a', as by abolt a3 and anut c4. The bar ct' may be secured to or form part of abottom plate a5, which in practice is designed to be screwed orotherwise fastened to the casing A of the door, the plate being hereinrepresented as provided with a depending iiange a6 and set into amortise in the casing A', so as to be flush with the same. `The pivot orarbor a, in accordance with this invention, has fitted upon it a sleeveb, herein shown substantially as long as the pivot or arbor a and havingsecured to or forming part of it at its upper end a collar b, the saidsleeve at its lower end beingprovided with preferably two arms b2 b3,extended from opposite sides of the sleeve near its bottom and locatedon opposite sides of a transverse line through the sleeve, as clearlyshown in Fig. 2. The sleeve b has loosely fitted upon it a second sleeveb5, provided with arms 136 197, similar to the arms b2 b3, but extendedfrom the sleeve b5, so as to lie opposite-.Ito the arms b2 h3 and leavesuitable spaces or open ings, up into which project lugs or fingers bs ton arms om 1212, (see Fig. 3,) eXtended from the pivot pin or arbor ct,the said openings between the arms b2 t6 b3 117 also having extended upinto them uprights or posts Z913 614, secured to or forming part of theplate or bar c. The sleeves t b5 are encircled by a spiral spring c,having one end engaging with or connected to the inner sleeve b at oneend of the shaft or pivot, herein shown as the upper end, the saidspiral spring havingits end c' engaging or bearing against a stud or pinc2, projecting from the collar b on the sleeve b.

The lower end of the coiled spring c is engaged with or connected to thesleeve b5, which may be accomplished, as herein shown, by having thecurved end c8 of the spiral spring c engaging a pin or post c4, erectedfrom the arm bl, as shown in Fig. 2.

The pivot or arbor a is .extended through the plate c5, as shown inFigs. 3 and 4, and below the said plate the pivot or arboris providedwith an angular projection d, which is adapted to enter a suitablesocket in a plate d', fastened to the upper edge of the door A, so thatwhen the door'A is turned the shaft or pivot a will be turned with it.

IOO

In practice the door A normally occupies a closed position, asrepresented in Fig. l, and if it is desired to open the door in onedirection, as, for instance, to move it in the direction indicated bythe arrow 20, Fig. 2, pressure is applied to the door, which pressureturns the pivot or arbor a and causes the lingers las b9 to engage thearms b 197, thereby turning the outer sleeve h5 in such direction as towind up the lower portion of the coiled spring, the stud c4 moving theend c3 of the coiled spring in the direction indicated by the arrow 22,Fig. l2, the upper end of the coiled spring being held stationary byreason of the arms b2 b3 on the sleeve b engagin g the stationary postsor uprights bis Z914.

l/Vhen the pressure is removed from the door A, it is returned to itsnormal position by the uncoiling of the spring c. The movement of thedoor A in the direction opposite to the arrow 2O restores the arms b Z)7into contact with the stationary posts Z913 Z914.

4If it is desired to swing the door in the direction opposite to thatindicated by the arrow 20, pressure is applied to the opposite side ofthe door A, and the shaft or arbor a is turned in the oppositedirection, which movement causes the lugs or fingers 68 b9 to act on thearms b2 b3 of the sleeve Z), and thereby move the said sleeve in thedirection opposite to that indicated by the arrow 22, Fig. 2, and causethe spring c to be wound up by the stud or pin c2 engaging the end c ofthe coiled spring, the lower end of the coiled spring being heldstationary by the uprights or posts 513 514 engaging the arms 66 57 ofthe sleeve h5 and preventing movement of the said arms, and therebyholding the lower end of the coil stationary. When pressure is relievedfrom the door A, the coiled spring c, acting through the sleeve b andits arms b2 b3 against the fingers bs b9, turns the shaft or arbor backto its normal position.

The tension of the spring c may be adjusted by inserting the pin c2 indifferent holes in the collar b.

I claim- In a spring-hinge, the combination of the followinginstrumentalities, viz: a supportin g-fram e, a pivot or arbor journaledtherein, a sleeve loose on the said pivot or arbor and provided with anarm extended therefrom, a second sleeve loose on the iirst sleeve andprovided with an arm extended in a direction substantially opposite tothe arm on the first sleeve, a spring encircling said sleeves and actingon the same to rotate them and their arms in opposite directions, lugsmovable with the arbor or pivot and engaging the arms on the saidsleeves, and stops to limit the movement of the sleeves by the saidspring, substantially as described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

PERLEY CHANDLER.

Vitnesses:

F. A. WALKER, U. S. CHnnvER.

